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authorSean Paul <seanpaul@chromium.org>2018-10-24 14:26:04 -0400
committerSean Paul <seanpaul@chromium.org>2018-10-24 14:26:04 -0400
commit6542e9adc0da1e23d81ff9314265a029b961906d (patch)
tree35ba360a7150d8b042a9fd75ab54ef83b34a2b95 /include/linux/spi/spi-mem.h
parent2b02a05bdc3a62d36e0d0b015351897109e25991 (diff)
parentf2bfc71aee75feff33ca659322b72ffeed5a243d (diff)
Merge drm/drm-next into drm-misc-next
4.19 is out, Lyude asked for a backmerge, and it's been a while. All very good reasons on their own :-) Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'include/linux/spi/spi-mem.h')
-rw-r--r--include/linux/spi/spi-mem.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index b2bd4b4127c4..69ee30456864 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -81,8 +81,10 @@ enum spi_mem_data_dir {
* @dummy.buswidth: number of IO lanes used to transmit the dummy bytes
* @data.buswidth: number of IO lanes used to send/receive the data
* @data.dir: direction of the transfer
- * @data.buf.in: input buffer
- * @data.buf.out: output buffer
+ * @data.nbytes: number of data bytes to send/receive. Can be zero if the
+ * operation does not involve transferring data
+ * @data.buf.in: input buffer (must be DMA-able)
+ * @data.buf.out: output buffer (must be DMA-able)
*/
struct spi_mem_op {
struct {
@@ -105,7 +107,6 @@ struct spi_mem_op {
u8 buswidth;
enum spi_mem_data_dir dir;
unsigned int nbytes;
- /* buf.{in,out} must be DMA-able. */
union {
void *in;
const void *out;